Finding the Fourth Proportional to 78,389.43, 108,178.01 and 42,579.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,389.43 : 108,178.01 = 42,579.44 : x
2. Step 2: Convert to fraction form
   78,389.43/108,178.01 = 42,579.44/x
3. Step 3: Cross multiply
   78,389.43x = 108,178.01 × 42,579.44
4. Step 4: Simplify right side
   78,389.43x = 4,606,158,332.33
5. Step 5: Solve for x
   x = 4,606,158,332.33/78,389.43
6. Step 6: Final answer
   x = 58,759.94